US3113991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of tagging bulk materials
Assignee: Nucor Corp
•
Filing: 1959-08-18
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Granted: 1963-12-10
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Expires: 1979-08-18
Abstract
No abstract record available.
Inventors
- 👤 Eugene V Kleber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:19
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/62; G01N21/66; G01N21/67
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
THE METHOD OF IDENTIFYING BULK MATERIAL WHICH COMPRISES SELECTING AT LEAST TWO RARE EARTH MATERIALS EACH HAVING SPECTROGRAPHIC LINES WHICH DO NOT INTERFERE WITH THE SPECTROGRAPHIC MATRIX OF THE BUILK MATERIAL AND EACH HAVING A MELTING POINT COMPATIBLE WITH THE MELTING POINT OF SAID BULK MATERIAL, ADDING A TRACE AMOUNT OF ONLY SAID SELECTED RARE EARTH MATERIALS TO THE BULK MATERIAL, THE RELATIVE PROPORTIONS OF THE SELECTED RARE EARTH MATERIALS ADDED BEING SIGNIFICANTLY DIFFERENT FROM THE PROPORTIONS IN WHICH THEY OCCUR IN NATURALLY OCCURRING DEPOSITS AND MELTING THE MIXTURE, SOLIDIFYING THE MOLTEN MATERIAL THEREBY FORMING A SOLID SOLUTION, DISTRIBUTING THE SOLIDIFIED MATERIAL, RECOVERING A PORTION OF THE DISTRIBUTED MATERIAL AND SUBJECTING THE RECOVERED MATERIAL TO SPECTROGRAPHIC ANALYSIS TO DETERMINE THE PARTICULAR RARE EARTH MATERIALS AND THE AMOUNT OF EACH PRESENT THEREIN.
Claim 2
Independent Claim
131 words
THE METHOD OF IDENTIFYING BULK MATERIAL WHICH COMPRISES SELECTING AT LEAST TWO RARE EARTH MATERIALS EACH HAVING SPECTROGRAPHIC LINES WHICH DO NOT INTERFERE WITH THE SPECTROGRAPHIC MATRIX OF THE BUILK MATERIAL AND EACH HAVING A MELTING POINT COMPATIBLE WITH THE MELTING POINT OF SAID BULK MATERIAL, ADDING A TRACE AMOUNT OF ONLY SAID SELECTED RARE EARTH MATERIALS TO THE BULK MATERIAL, THE RELATIVE PROPORTIONS OF THE SELECTED RARE EARTH MATERIALS ADDED BEING SIGNIFICANTLY DIFFERENT FROM THE PROPORTIONS IN WHICH THEY OCCUR IN NATURALLY OCCURRING DEPOSITS AND MELTING THE MIXTURE, SOLIDIFYING THE MOLTEN MATERIAL THEREBY FORMING A SOLID SOLUTION, DISTRIBUTING THE SOLIDIFIED MATERIAL, RECOVERING A PORTION OF THE DISTRIBUTED MATERIAL AND SUBJECTING THE RECOVERED MATERIAL TO SPECTROGRAPHIC ANALYSIS TO DETERMINE THE PARTICULAR RARE EARTH MATERIALS AND THE AMOUNT OF EACH PRESENT THEREIN.
References Cited (Backward Citations)
US2876095A
Cited
US2882145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-09 | 1967-06-10 | 1967-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-09 | 1971-06-10 | 1971-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-09 | 1975-06-10 | 1975-12-10 | $7700.00 | Window Closed / Lapsed |